On September 12, 2019, a pair of SEL-T400L Time-Domain Line Protection relays detected a B-phase-to-ground fault while protecting the Public Service Co. of New Mexico (PNM) 109-mile 345 kV ...
Schweitzer Engineering Laboratories (SEL) released the SEL-T400L Time-Domain Line Protection—the world’s first traveling-wave microprocessor-based relay. It detects power system faults and sends a ...
Schweitzer Engineering Laboratories (SEL) is partnering with Public Service Company of New Mexico (PNM), the state’s largest electricity provider, to be the first to protect high-voltage 345 kV ...
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